http://api.tweetmeme.com/imagebutton.gif?url=http://sports.espn.go.com/nba/news/story?id=5012462&campaign=rss&source=NBAHeadlines (http://api.tweetmeme.com/share?url=http://sports.espn.go.com/nba/news/story?id=5012462&campaign=rss&source=NBAHeadlines&service=tinyurl.com&source=espn)After a mysterious firing of his key aide, the Blazers are at risk of losing general manager Kevin Pritchard, according to NBA sources.